Trailer Tongue Jacks Denting Asphalt

A tongue jack puts the trailer's hitch weight on a small wheel or foot. On warm asphalt that foot sinks, the trailer leans, and the dent holds water. Set the jack on a block.

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Why the foot sinks

Tongue weight is concentrated. A small steel wheel or a narrow foot is enough pressure to creep into asphalt that is warm from the sun, freshly paved, or already soft from a rich or poorly compacted spot. The jack sinks a little more each hour the trailer sits, and the frame drops. People then crank the jack harder, which drives it deeper. The dent becomes a cup. Sealcoat does not harden the pavement under the jack, and a fresh coating is easier to punch through. Cold patch stuffed in the dent later is a temporary fill, not a reinforced pad. The immediate prevention is to spread the load with a cut of wood, a thick puck made for jacks, or another pad the trailer maker would accept, placed before the asphalt yields.

Choosing and using a pad

The pad should be wider than the foot, sound enough not to split, and dry. A cracked board can still punch through at the crack. Center the jack on the pad, and keep the pad fully on the asphalt rather than half on a soft shoulder. On a slope, chock the trailer wheels so the jack is not also holding the rig from rolling. Do not rely on a brick that can snap. In hot weather, even a good pad can slowly settle if the driveway is tender, so check the jack after the first hot afternoon. A new driveway needs the wait the paver recommended before any concentrated load. A measuring wheel is not part of this setup. If you park a trailer in the same dent every weekend, you are training a low spot. Move the pad location occasionally or park on a section built for the load.

Repairing the cup

If the dent holds water, it will grow under traffic even after the trailer is gone. A shallow mark that does not pond may be left. A deeper cup should be squared, cleaned, and filled with hot mix when you can get it, compacted flush. Cold patch can level it temporarily so a tire does not drop in. Do not feather filler across the driveway. If the whole parking spot ruts under the trailer tires as well as the jack, the section is too thin or too soft for that stored weight, and a bigger pad only slows the jack dent. Rebuilding that pad area means base stone and asphalt tons planned at AsphaltTons.com for the real thickness, with density confirmed by the plant in the usual 140 to 150 pounds per cubic foot conversation, at the price quoted that day. Stop using the driveway as a permanent equipment yard until that section exists.

A practical sequence

Set the tongue jack on a sound board or jack pad before it bites the asphalt.
Chock the wheels and recheck the jack after hot afternoons.
Avoid the same spot on new or sun-softened pavement.
Square and patch cups that hold water instead of smearing them over.

The mistake to skip

Cranking a narrow jack wheel directly into warm asphalt under a loaded trailer.

Questions people ask

Is a plastic jack wheel better than steel?

It may scuff less, and it can still sink if the contact area is small and the mix is warm. Use a pad either way.

Will the dent rebound when the trailer leaves?

A light mark might ease. A deep cup in warm mix usually stays and should be repaired if it holds water.

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